BIOS is American Megatrends with very few features. It is not UEFI.
Did perform BIOS update from A10 to A11. It was all done from within Windows, never booted into a different environment & never even asked to reboot upon completion. At the Dell splash screen, it doesn't even tell you how to enter the BIOS, but I've used lots of Dells & they are always F2.
There are no settings for PCI-e graphics card, but after I installed it, 1st power up, it automatically restarted & recognized the video card as the primary. Probably don't really need the card, but it came out of the old computer. Other models of this Dell do have a separate graphics card which is probably why it worked.
When initializing HWInfo sensors, it always displays the warning about the Dell EC. I don't disable it & the 5 items displayed are shown in the attached pic. I will rarely used the hardware monitoring on this computer, but the System Summary is always handy when questions arise.
BTW, SpeedFan gives the same results for the fans as HWInfo, but displays nothing for voltages. My HP laptop is the business line with a lot more BIOS features & it's UEFI capable.
Dell appears to have nothing for their consumer line. You must have encountered this with Dells before?
http://en.community.dell.com/support-forums/desktop/f/3514/p/19271533/19475736.aspx
Probably temp monitoring will be the only useful monitoring.
As always, the work you have done is truly incredible. You are light-years beyond all the other tools. I still use CPU-Z, not sure why.